About 25 of the 92 natural elements are known to be essential to life. which four of these 25 elements make up approximately 96% of living matter? about 25 of the 92 natural elements are known to be essential to life. which four of these 25 elements make up approximately 96% of living matter? carbon, oxygen, phosphorus, hydrogen carbon, hydrogen, nitrogen, oxygen carbon, oxygen, nitrogen, calcium oxygen, hydrogen, calcium, nitrogen carbon, sodium, hydrogen, nitrogen

The correct answer would be the second option. Four of these 25 elements that make up approximately 96% of living matter are carbon, hydrogen, nitrogen, oxygen. The elements carbon and hydrogen are the backbone for organic compounds which is the foundation of cells that are present in all living matter. Also, the cells in all living matter are made up of protein which are primarily made up of amino acids which contains nitrogen, oxygen, carbon and hydrogen atoms. So, basically, without these elements in the cells all living matter would not be present and there would be no life in any case.